428020602776 has 32 divisors (see below), whose sum is σ = 865990712160. Its totient is φ = 197155206912.

The previous prime is 428020602719. The next prime is 428020602787. The reversal of 428020602776 is 677206020824.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4038725 + ... + 4143348.

It is an arithmetic number, because the mean of its divisors is an integer number (27062209755).

Almost surely, 2^428020602776 is an apocalyptic number.

It is an amenable number.

428020602776 is an abundant number, since it is smaller than the sum of its proper divisors (437970109384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428020602776 is a wasteful number, since it uses less digits than its factorization.

428020602776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8182595 (or 8182591 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 428020602776 in words is "four hundred twenty-eight billion, twenty million, six hundred two thousand, seven hundred seventy-six".